Abstract
| Original language | English |
|---|---|
| Title of host publication | Audio Engineering Society Preprint : Presented at the 80th Convention |
| Publisher | Audio Engineering Society |
| Publication date | 1986 |
| Publication status | Published - 1986 |
| Event | AES Convention - Montreux, Switzerland Duration: 4 Mar 1986 → 7 Mar 1986 Conference number: 80 |
Conference
| Conference | AES Convention |
|---|---|
| Number | 80 |
| Country | Switzerland |
| City | Montreux |
| Period | 04/03/1986 → 07/03/1986 |
Bibliographical note
Paper Number:2346Keywords
- Amplifiers
- Audio frequency
- Amplifiers, power type
- Electronic circuits
- Power supply - applications
- Audio equipment
- Data conversion, digital to analog
- High efficiency power audio amplifier
- Digital preamplifier
- Control of power supply
- Conversion from digital to analog signal;
- Switch-mode power supply
Cite this
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A New Principle for a High Efficiency Power Audio Amplifier for Use with a Digital Preamplifier. / Jensen, Jørgen Arendt.
Audio Engineering Society Preprint: Presented at the 80th Convention. Audio Engineering Society, 1986.Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review
TY - GEN
T1 - A New Principle for a High Efficiency Power Audio Amplifier for Use with a Digital Preamplifier
AU - Jensen, Jørgen Arendt
N1 - Paper Number:2346
PY - 1986
Y1 - 1986
N2 - The use of class-B and class-D amlifiers for converting digital audio signals to analog signals is discussed. It is shown that the class-D amplifier is unsuitable due to distortion. Therefore, a new principle involving a switch-mode power supply and a class-B amplifier is suggested. By regulating the supply voltage to the amplifier according to the amplitude of the audio signal, a higher efficiency than can be obtained by the current principles is achieved. The regulation can be done very efficiently by generating the control signal to the power supply in advance of the audio signal, made possible by the digital signal from the preamplifier. A prototype shows possibilities for further developments.
AB - The use of class-B and class-D amlifiers for converting digital audio signals to analog signals is discussed. It is shown that the class-D amplifier is unsuitable due to distortion. Therefore, a new principle involving a switch-mode power supply and a class-B amplifier is suggested. By regulating the supply voltage to the amplifier according to the amplitude of the audio signal, a higher efficiency than can be obtained by the current principles is achieved. The regulation can be done very efficiently by generating the control signal to the power supply in advance of the audio signal, made possible by the digital signal from the preamplifier. A prototype shows possibilities for further developments.
KW - Amplifiers
KW - Audio frequency
KW - Amplifiers, power type
KW - Electronic circuits
KW - Power supply - applications
KW - Audio equipment
KW - Data conversion, digital to analog
KW - High efficiency power audio amplifier
KW - Digital preamplifier
KW - Control of power supply
KW - Conversion from digital to analog signal;
KW - Switch-mode power supply
M3 - Article in proceedings
BT - Audio Engineering Society Preprint
PB - Audio Engineering Society
ER -